Gang-saw edger



Sept. 16 1924. 1,508,606

V .1. T. MACKIE.

GANG SAW EDGER- n m avvuc/vvbo'rl Tw g- JZA/d(/(I6..

Sept 15, 1924 1,508,606

J. T. MACKiE GANG SAW EDGER Filed May 4, 1923 2 Sheets-Sheet 2 2a II M j/ I \x E 2/ E2 s w v ff/lfaci/.

Patented Sept. 16, 1924.

sres

JAMES T. MAGKIE, OF NEW WESTMINSTER, BRITISH COLUMBIA, CANADA.

GANG-SAW EDGEE.

Application filed May, 4,

To all whom it may concern:

Be it known that I, JAMES T. MACKIE, citizen of the Dominion of Canada, residing at New 'VVestminster, in the Province of British Columbia, Canada, have invented certain new and useful Improvements in Gang-Saw Edger-s, of which the following shaft in adjusting them to the desired width of timber required. As the time of the sawyer is valuable, this work of adjusting the saws should be more rapidly performed than can be done by manual labour and it is desirable that the sawyer should be relieved of such work.

In the invention, which is the subject of this application, a simple, direct and mechanically satisfactory means is applied for endwise moving the saws along the saw shaft, which operating means may be connected to the mechanism of'the saw that the work of endwise moving the saws may be done by the power which drives the machine. There is valso provision for securing the saws in any desired position of ad j ustinent. J

The invention is particularly described inthe following specification, reference being :1 made to the drawings by which it is accompanied, in which Fig. 1 is a side elevation of the mechanism showing its application to one ofthe saws of a gang, the cover plate of the gear box being removed.

Fig. 2'is a plan of the same adjacent one end of the machine.

Fig. \3 is a sectional plan to an enlarged scale on the line 33 in Fig. 1, and

Fig. 4 is a similarly enlarged. detail through the gear box on the line H in Fig. 1, looking in the direction of the arrows.

In these drawings 2 representsthe shaft of the saw which is provided with a feather 3 on which the hubs 4: of the several saw plates are lengthwise movable along the shaft, to adjust the saws to the required distance apart. The feed rollers through which the lumber is fed to the edging saws are represented by 6 and 7, the lower one part of the machine. i

1923. Serial No. 636,674.

of which is a live roller driven inany suitable manner. as by a belt pulley 8 secured on the roller shaft 9.

, Each saw plate 5 is endwise moved on the feathered shaft 2 by a jaw member 10 hav ing lignum vitae contact pieces 11 which engage the opposite faces of the saw plate.

This jaw member 10 is removably mounted on an upward projection '12from the forward bearing 13 of the gear box 14; which is slidably mounted onitwo supporting rods 15 secured across the frameof the machine parallel to the axis of the saw shaft 2.

A gear box 14 is provided foreach saw I ,1 "1,508,606" PATENT oFFIcE.

and each is independently movable on the slide rods 15 by. a screw 16 parallel to-the slide rods and the saw shaft, which screw isfixed against rotation in the frame of the machine by set screws 17 The; fixed screw 16 passes through a nut 18 rotatably mounted in each gear box, the outer ciroumference of which nut has teeth to mesh with box, that the teeth of either pinion 19 or 20 may be moved into mesh with those of the nut 18.

These pinions 19-and 20 mesh together and are therefore driven in opposite directions by a pinion 23 mounted between the side plates of the gear box to move endwise on a feathered shaft 24, which shaft is driven by an endless chain 25 from the shaft '9 of the live roller 6 or other convenient The handled end of the pinion carrying frame 21 projects through the end of the gear box which is further from the saws so that the operator, by moving-the handler end of the pinion carrying frame 21 upward from the neutral position, shown by the full lines in Fig. 1, to the position indicated by the dot and dash lines in the same figure,

the teeth of the pinion 19 are brought into mesh with those of the nut 18, Without with drawing the teeth of 19 from engagement with those of the driving pinion 23: Con versely, if th handled end of 21 is moved downwarch as indicated by the dot and dash lines in the same figure, the teeth of the pinion 20' are moved into mesh with those of the nut l8gwhile 20 is in driving con nection with the pinion 23 throughthe' pinion 19 acting as an intermediate gear and according to the direction in which the nut the saw shaft, said means comprising a power means and means for engaging, and

the nut, and means for so connecting the nut itoits saw thatzendwise: movementgof the nut due to its rotation'on the screw'wvill impart a corresponding endwise movement tothe saw ofitsshaft. r i 2. In a gang saw edger, the combination with the saw shaft and saws endwise movable thereon and rotatable with it, of means vfor separately moving each saw endwise on the shaft, said means comprising a screw parallel withthe axis of thesawshafta'nd' secured'against rotation, a nutrforeachsaw rotatably mounted on the screw, means preventing rotation ofthe-nut, means for-jwi'thdrawing such preventing means, and means co-operative withysuchwithdrawing means a -forrotating'the nut in eitherdirection, and I means connecting the nut to its sawto' move" thesaw endw-ise on'its shaft as the nut" moves endwise on-its screw when rotated; I 35 3. In a gang-saw edger, the "combination with the saw shaft and -saws endwise mov-ii "able thereon and rotatable with it, of means' forseparately moving each 'saw endwise on the shaft, saidvmeans comprising a--screw parallelswith the axis of the sawn-sha'ft and securecl against rotation, a nut fon'each saw vrotatably mounted on the-screw, means '='for rotatingthe nut inreitherdirectioin means connecting the nut to'the'saw to move the teeth ,of'either pinion, l9 or 20 are brought saw, along its shaft as the nut is moved alonginto meshwith those of, the nut-18. its fixed screw when rotatedymeans main- A graduated bar 35 is secured across betaining the; nut rotating means outofdriv tween the sideframes 37 of the machine and ing; engage1nent with the nutyand means anind cat ng pointer Be -1s. secured to the preventing rotation of the nut: when the-" upper side. of each gear box to facilitate rotatingnneans isr=withdrawn.- 1 setting the saws to any. desired distancev 4. lnuaigang saw: edger," the: combination apart. -with the sawshaftand saws endwise 'mov---'=' In use, the shaft 24 with the pinions 23, 19 able thereonand rota-table witl1-it,0f means d 2 be g llivenfroin the dive cifeed forindependently moving ea'ch' saw endroller 6, the operator can at any time while; wise nonothe-z shaftg-said' means comprising the machine is running, readily;adjustthema screw parallel to the saw shaft which several saws successively, or simultaneouslysj screw is fixediaga'instrotation, a pinion foi' to the desired position, by raising or; lowereach: saw threaded 1St1111i31301fibth6 screwy ing the handled end of the pinion carrying wmeans for connecting this nut" pinion to its frame 21-v according tothe directionlthesaw saw to travel the saw en'dwise along the or saws are required to move; so that ,the;;shaft, a a drive shaft parallel and adjacentopera or .iS r li ved Of he l bour of II1OV-Jthe-.-screw, means for rotating this shafting the saws and the work can be more. from ranwoperative part of themachine, a quickly performed. pinion rotatable with the shaft and endwise" Iiiavingjv now particularly described my movableion:it,means:for retaining the drive invention, I hereby declare that what Lclaim shaft pinion in the plane of thenu-t pinionf uas new and desire to be protected in by Let. .a handledm-frameconnected to -travel with; ters Patent,is: v c, i p I; .the nut pinionandpivotallymounted in- L'In a gang saw edger, the combination suchaconnection, -pinions lll'OUDtGd in the 'therS W Sh f d saws endwise-movuframe one on each side of theipivot, the" I I able h on and o atab e withit,.of means teeth: of=.which pinions mesh Withone anfor separately moving. each Saw endwise on. other and one of them in mesh with the :drive pinion, means for: moving either-of the pinionsinthe frame into mesh'with' the nut .pinion while-the teeth of the other pinion are withdrawn from such engagement, rand means for normally holdingthe frame with -both.:pinionsont ofs-engagement with thenutpinion. 1 1;; menia e .1 -t;.130

1, v. vii 'M 1" 12i driving the pinion 20 in the direction opposite to 19. a

Rotation of the nut 18 in either direction will, by virtue of the fixed screw '16, n1o.ve the gear box and its connected parts endwise, along the screw and along theguide rods 15,

18 is rotated, the driving pinion 23 being endwise movable the while on the. feathered: shaft 24.

The pinion carrying frame 21 is maintained in the neutral position, with lbothi pinions 19 and 20 out of mesh with the nut 18, by springs 26 and 27 connected between a pin on the frame 21 and the upper and lower side of the gear box respectively,,and, adjustable in such connection by nuts '28.

To ensure that, whilethe pinions 19 and 20 are out of mesh, the nut 18 shall be locked against rotation, and therefore that'the saws are maintainedrin the position .to which they, are set, a detentrlever 30, is pivoted at-Sl, the freeend of which lever is turnedtoward andvfits ,between the teethcfithe nut 18. ;In-; tcrmediate its ends this detent lever fitsagainst thehub or other projection of the pinion carrying frame 21, that movement of that frame in either, direction, will with draw. theidetent end of theilever, from engagement with thennut teeth, before the screw secured against rotation across the frame of the machine to be parallel with the axis of the saw shaft, a nut for each S2L\Y 1f0tat lbly mounted on the screw,; a

disengaging each nut thereto for rotating 5. In a gang saw edger, the combination with a saw shaft and saws endwise mov able thereon and rotatable with it, of means for independently moving each saw endwise on the shaft, said means comprising a gear box for each saw, guideways parallel to the saw shaft on which guideways each gear box is separately slidab-le, a screw secured against rotation with its axis parallel to that of the saw shaft which screw passes through the several gear boxes, a pinion within each gear box threaded to rotate as a nut on the fixed screw, means projecting from each gear box for engaging the opposite faces of its saw plate, a drive shaft parallel to the fixed screw and passing also through the several gear boxes, means for rotating this shaft, a pinion in each gear box rotatable with the drive shaft and endwise movable on it, a frame pivotally mounted in each gear box and having a handled end projectingthrough it by which the frame may be moved on its pivot, tWo

pinions rotatably mounted in the pivoted frame one on each side of its pivot, the teeth of which pinions mesh with one another and the teeth of one of the pinions mesh with those of the pinion on the drive shaft, means normally maintaining the pinion. carrying frame with the teeth. of its, pinions clear of engagement with those of the nut pinion on the fixed screw, means for securing the nut pinion againstrotation when the frame pinions are out of engagement with it, and means for bringing the teeth of either of the frame pinions separately into engagement with the teeth of the nut pinion.

In testimony whereof I affix my signature. 

